Oregon Route 140
|Maintained by ODOT|
|Length||237.01 mi (381.43 km)|
|West end||OR 62 in White City|
| US 97 and OR 66 in Klamath Falls|
OR 39 near Altamont
OR 70 in Dairy
US 395 in Lakeview
US 395 near Lakeview
|East end||SR 140 near Adel|
Oregon Route 140 is an Oregon state highway that serves the southern portion of the state. It is the longest state highway in Oregon, running 237 miles from the community of White City, Oregon (just north of Medford), through Klamath Falls and on to Lakeview. It then continues east, eventually descending into the state of Nevada.
Oregon Route 140 begins in White City at a junction with Oregon Route 62 (which runs between Medford and Crater Lake National Park). Oregon Route 140 is the primary connection between Medford and Klamath Falls. The stretch of OR 140 between the two cities is known as the Lake of the Woods Highway No. 270 (see Oregon highways and routes), as it passes by the scenic Lake of the Woods and Mount McLoughlin in the Sky Lakes Wilderness. It then runs along the southwestern shore of Upper Klamath Lake, where it is part of the Volcanic Legacy Scenic Byway. Upon entering the Klamath Falls area, it joins together with Oregon Route 66 (which runs between Klamath Falls and Ashland) on the Green Springs Highway No. 21, and the two highways soon intersect with U.S. Route 97 at a freeway interchange.
OR 140 continues east of here, on an alignment known either as the South Klamath Falls Highway No. 424 or the Southside Bypass. Southeast of town, OR 140 intersects with Oregon Route 39, heads north on a shared alignment for about two miles (3 km), on the Klamath Falls-Malin Highway No. 50, and then continues east towards Lakeview on the Klamath Falls-Lakeview Highway No. 20.
In Lakeview, the highway meets U.S. Route 395 on the Fremont Highway No. 19 and runs concurrently with it north for 4.6 miles (7.4 km). Then it heads east as Warner Highway No. 431, skirting the south end of Warner Valley and traversing the Doherty Slide before reaching the Nevada state line, where it becomes Nevada State Route 140.
Almost exactly 30 miles west of Lakeview, there is a rest stop featuring an informational sign on a "balloon bomb" explosion that took place on May 5th, 1945, and resulted in the only civilian casualties of World War II in the continental United States.
|Jackson||||0.00||0.00||OR 62 – Eagle Point, Crater Lake, Medford|
|Klamath||||43.58||70.14||Westside Road – Rocky Point, Fort Klamath, Crater Lake National Park||Former Klamath Lake Highway|
|OR 66 west – Keno, Ashland||Western end of OR 66 overlap|
| US 97 – Klamath Falls, Bend, Weed|
OR 66 ends
|Interchange; eastern end of OR 66 overlap|
|||1.57||2.53||Tingley Lane (Midland Highway)|
|OR 39 south – Merrill, Alturas||Western end of OR 39 overlap|
|OR 39 north – Klamath Falls, Bend||Eastern end of OR 39 overlap|
|Dairy||19.02||30.61||OR 70 east – Bonanza, Lorella|
|US 395 south – Alturas, Reno||Western end of US 395 overlap|
|US 395 north – Burns, Bend||Eastern end of US 395 overlap|
|Adel||28.18||45.35||Plush-Adel Road, Twenty Mile Road – Plush, Hart Mountain Refuge, Fort Bidwell, Coleman Valley||Former Warner Highway (north to Plush)|
|Harney||||65.28||105.06||SR 140||Continuation into Nevada|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- "Descriptions of US and OR Routes" (PDF). Oregon Department of Transportation. Archived from the original (PDF) on October 26, 2007. Retrieved April 24, 2018.
- Peter Murphy (August 25, 2015). "Oregon's Ranch Road". 1859 Oregon's Magazine. Retrieved April 24, 2018.
- "Straightline Charts". Oregon Department of Transportation. Retrieved June 28, 2014.
- Media related to Oregon Route 140 at Wikimedia Commons
- Sykotyk's Super Trip: Nevada/Oregon Route 140 - A motorist's trip along SR 140